CVE-2026-26107: CWE-416: Use After Free in Microsoft Microsoft 365 Apps for Enterprise
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-26107) involves a use-after-free condition in Microsoft Office Excel, part of Microsoft 365 Apps for Enterprise version 16.0.1. Exploitation could enable an attacker to execute arbitrary code locally. The CVSS 3.1 vector indicates low attack complexity, no privileges required, but user interaction is needed. Confidentiality, integrity, and availability impacts are all high. The vendor has released a patch to fix this vulnerability.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code with the privileges of the local user, potentially leading to full compromise of the affected system. The impact includes high confidentiality, integrity, and availability loss. No known exploits are currently reported in the wild.
Mitigation Recommendations
A patch is available for Microsoft 365 Apps for Enterprise version 16.0.1 to remediate this use-after-free vulnerability. It is recommended to apply the official update from Microsoft promptly to mitigate the risk. Since this is not a cloud service, remediation depends on applying the patch on affected endpoints.
CVE-2026-26107: CWE-416: Use After Free in Microsoft Microsoft 365 Apps for Enterprise
Description
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-26107) involves a use-after-free condition in Microsoft Office Excel, part of Microsoft 365 Apps for Enterprise version 16.0.1. Exploitation could enable an attacker to execute arbitrary code locally. The CVSS 3.1 vector indicates low attack complexity, no privileges required, but user interaction is needed. Confidentiality, integrity, and availability impacts are all high. The vendor has released a patch to fix this vulnerability.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code with the privileges of the local user, potentially leading to full compromise of the affected system. The impact includes high confidentiality, integrity, and availability loss. No known exploits are currently reported in the wild.
Mitigation Recommendations
A patch is available for Microsoft 365 Apps for Enterprise version 16.0.1 to remediate this use-after-free vulnerability. It is recommended to apply the official update from Microsoft promptly to mitigate the risk. Since this is not a cloud service, remediation depends on applying the patch on affected endpoints.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-02-11T15:52:13.909Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69b0562fea502d3aa87d6af3
Added to database: 3/10/2026, 5:34:39 PM
Last enriched: 4/18/2026, 2:14:50 PM
Last updated: 4/28/2026, 7:27:30 AM
Views: 108
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